Synchronous rectifier

Abstract

The invention relates to a synchronous rectifier ( 16 ) for integration into a power source ( 10 ) in order to provide a direct current, in particular in a cube or ashlar-shaped unit of a heavy-current transformer ( 12 ), comprising circuit elements ( 24 ), an actuation circuit ( 17 ) for actuating the circuit elements ( 24 ) and a supply circuit ( 48 ), wherein a printed circuit board ( 35 ) with conductor tracks and connection surfaces is provided for receiving electronic components. For reduction of losses and improvement of efficiency, the circuit elements ( 24 ), the actuation circuit ( 17 ) and the supply circuit ( 48 ) are arranged on the circuit board ( 35 ) for the autonomous operation thereof, wherein several openings ( 37 ), which are arranged in parallel and in series, are provided on the circuit board ( 35 ) for receiving protrusions ( 36 ) of a contact plate ( 29 ), above which openings ( 37 ) the circuit elements ( 24 ) are arranged and are connected or soldered and can be contacted with the protrusions ( 36 ) of the contact plate ( 29 ).

The invention claimed is: 
     
       1. A synchronous rectifier for integration into a power source in order to provide a direct current, in particular in a cube or ashlar-shaped unit of a heavy-current transformer, the synchronous rectifier comprising circuit elements, an actuation circuit for actuating the circuit elements and a supply circuit,
 wherein a printed circuit board with conductor tracks and connection surfaces is provided for receiving electronic components, the printed circuit board having a first side and a back side opposite to the first side, 
 wherein the circuit elements, the actuation circuit and the supply circuit are arranged on the printed circuit board, 
 wherein several openings arranged in rows and in columns are provided on the printed circuit board for receiving protrusions of a contact plate, and 
 wherein the circuit elements are arranged and connected or soldered to the printed circuit board above said openings, and 
 wherein the printed circuit board is mounted onto the contact plate so that the protrusions protrude through said openings so that the back side of the printed circuit board can be connected or soldered with the contact plate and the circuit elements arranged on the first side can be connected or soldered to the protrusions on the contact plate. 
 
     
     
       2. The synchronous rectifier according to  claim 1 , wherein the actuation circuit is arranged on both sides of the circuit elements which are arranged on the circuit beard in parallel and in series. 
     
     
       3. The synchronous rectifier according to  claim 1 , wherein the actuation circuit is connected to at least one sensor, in particular a current transducer, integrated in the heavy-current transformer. 
     
     
       4. The synchronous rectifier according to  claim 1 , wherein the supply circuit is formed in order to produce correspondingly heavy switching currents, preferably to produce switching currents between 800 A and 1500 A, in particular 1000 A, and to provide the electronic components with a corresponding supply voltage. 
     
     
       5. The synchronous rectifier according to  claim 1 , wherein a data communication circuit is provided in order to transfer data wirelessly, in particular inductively, magnetically or via short wavelength, ultra high frequency radio waves. 
     
     
       6. The synchronous rectifier according to  claim 1 , wherein on one side of the circuit board a solderable surface is provided over the entire face in order to be soldered to the contact plate.